1.文件的寫入和讀取
#!/usr/bin/python # -*- coding: utf-8 -*- # Filename: using_file.py # 文件是創(chuàng)建和讀取 s = '''''我們都是木頭人， 不許說話不許動(dòng)！''' # 創(chuàng)建一個(gè)文件，并且寫入字符 f = file('test_file.txt', 'w') f.write(s) f.close() # 讀取文件，逐行打印 f = file('test_file.txt') while True: line = f.readline() # 如果line長(zhǎng)度為0，說明文件已經(jīng)讀完了 if len(line) == 0: break # 默認(rèn)的換行符也讀出來了，所以用逗號(hào)取代print函數(shù)的換行符 print line, f.close()
執(zhí)行結(jié)果：
我們都是木頭人，不許說話不許動(dòng)！
2.存儲(chǔ)器的寫入和讀取
#!/usr/bin/python # -*- coding: utf-8 -*- # Filename using_pickle.py # 使用存儲(chǔ)器 #加載存儲(chǔ)器模塊，as后面是別名 #import pickle as p #書上說cPickle比pickle快很多 import cPickle as p listpickle = [1, 2, 2, 3] picklefile = 'picklefile.data' f = file(picklefile, 'w') # 寫如數(shù)據(jù) p.dump(listpickle, f) f.close() del listpickle f = file(picklefile) # 讀取數(shù)據(jù) storedlist = p.load(f) print storedlist f.close()
執(zhí)行結(jié)果：
[1, 2, 2, 3]
再來看一個(gè)使用cPickle儲(chǔ)存器存儲(chǔ)對(duì)象的例子
#!/usr/bin/python #Filename:pickling.py import cPickle as p shoplistfile = 'shoplist.data' shoplist = ['apple', 'mango', 'carrot'] f = file(shoplistfile, 'w') p.dump(shoplist, f) f.close() del shoplist f = file(shoplistfile) storedlist = p.load(f) print storedlist
